DenzSS

Car--A4, 3.23, FLP Level IV 4L60E, FLP Longtubes, ST3500.

Goal: Road Race/Fun Street Car

In about 4 weeks I'll get my heads back from the local porter I'm trying out. Valves are 2.02/1.55 Ferrea with Comp 918 springs. I'll wait for final cam selection until I get the flow sheets, but I need to get started on the decision.

Eventually it will be a turbo car, but I'm not too worried about putting in a turbo friendly cam since it is easy to swap in a new cam when the time comes. Although if I can, I may as well.

My thoughts so far:

XE-R 226/226 .575/.575 114ls

Thoughts?

Trevor @ Texas Speed & Perf.

iTrader: (3)

How high are you wanting to rev the engine?

DenzSS

I'd rather not take it over 6800. I don't like the life expectancy over 6800. LOL

DenzSS

Thinking about it again, maybe I should stick with a XE-R 224. That should bring the RPM down a bit even with the 114ls.

BIGBOS

Just go w/the 226 X-ER w/a 112lsa... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

I am going w/something similar to that, but a lot bigger..

232/232 .585/.585 112lsa... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

DenzSS

Where is the peak on that, somewhere around 7200? That's friggin' huge for stock cubes.

verbs

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Mike Hoffpauir:
<strong>Im running a Futral Motorsports 226/226 575/575 114 cam. So far we've only rev'd it to about 6600, but plan on trying it higher (6800). With stock heads I've run 119 mph with this set-up. I would suspect your performance to be similar to mine.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I think you are giving false hopes Mike....his performance won't be near yours unless his car is stripped....your raceweight is 3280 lbs....and I'm assuming that is the weight your car had when you ran the 119mph trap speed.

If his car has a more typical 3580 lb raceweight, then he will trap closer to 116mph, which is a huge difference.

Mike Hoffpauir

Nice call Verbs <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
But, I was figuring that most would take into account the full set-up of my car.
I'm not trying to type a novella on my car, but rather give a brief synopsis of it in hopes that what works would be apparent. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

DenzSS

My car definitely isn't a lightweight. It does go to the drag strip, but it definitely isn't set up for that. Full weight, very stiff suspension, etc.

Hell, I didn't know anyone else was running a 226 .575 114 cam.

I won't be running stock heads either though. I'm experimenting with a very experienced head porter here in KC. They may not flow like the big dogs, but they should be better than stock.

DenzSS

Do you have a dyno sheet for the cam? Where is the peak?

VINCE

iTrader: (1)

I want to clear one thing up.. The 226 XE-R's lift is .585 and some of them have spec'd .584. Like that really makes a difference. Where are people getting 3580lbs race weight. Either you guys are all under 140lbs or there are hidden sandbags in my car. Granite I am not a small person, but I think 3600lbs plus with a driver is the stock weight of our cars. 3580lbs is more like a car with some weight reduction. I.E., no backseat, no passenger seat, no spare or jack, 1 or 2 gallons of gas in the car. My car was trapping at a consistent 116mph with 3750lbs with cam/headers/DR's/3.42's/2.0 60ft. I had the T1 cam at that time. I have the 226 XE-R cam now. It idles great, but I have noticed no performance over the T1.

DenzSS

Does the XE-R lobes add lift? I thought the XE-R lobes were just a very fast ramp lobe.

Maybe I'm missing something.

<small>[ July 22, 2002, 02:10 PM: Message edited by: DenzSS ]</small>

VINCE

iTrader: (1)

The XE-R does not add lift. When you order the cam you get the lift that comes with that Duration. Comp cams also has a XE with smaller lifts, but not so aggressive ramps..

DenzSS

Let me make sure I'm understanding correctly.

If I order a XE-R 226/226 .575/.575 114ls, its actual lift with be .585?

<small>[ July 22, 2002, 04:24 PM: Message edited by: DenzSS ]</small>

Trevor @ Texas Speed & Perf.

iTrader: (3)

My XE-R 224/224 112 LSA with two degrees of advance ground in peaks at 6,550 RPM. However, I'm shifting at 6,800 for max ET at the track. Remember, you want to shift a few hundred RPM past your peak HP for max ET. So, considering where you want to shift, the XE-R 224/224 might be a nice choice. Get it with a total of four degrees ground in, and it should bring the peak down a little if you prefer.

Top Fuel

iTrader: (8)

I'm definitely no expert on the subject, but wouldn't a 226 XE-R be too much cam for a ST3500 and 3.23's? I'm thinking more of a 222 XE-R on 112 w/ 4 ground in. What do the shifts drop back down to on a ST3500 w/ 3.23's? 4700-4800? 4800-6800 seems like a lot of wasted time somewhere to me. Is it even going to cross the traps near peak? let alone a few hundred rpms past it? IMO I get something that peaked near 6100-6200 and shift at 6400 max.

just my $.02 <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

btw, my 226 XE-R came w/ .581 lift <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />

later,
Steve

VINCE

iTrader: (1)

Are you sure about .581? Was this cam doctored..? I copied the XE-R lobe sheet from Raughammer. When I ordered my cam I did not specify a lift and it came with .585. I will get my cam card to verify..

Top Fuel

iTrader: (8)

says .581 on my cam card, I dunno

Mike Hoffpauir

Im running a Futral Motorsports 226/226 575/575 114 cam. So far we've only rev'd it to about 6600, but plan on trying it higher (6800). With stock heads I've run 119 mph with this set-up. I think a 226 cam will net you predictable power that will be more than satisfactory.

Also, although my cam is ground by a different manufacturer the lobes should be similar in agressiveness to the XE-r lobes. So I would suspect your performance to be similar to mine.

Killer

iTrader: (3)

I will have a XE-R 224 cam in a few days NEW FS with NEW 918 springs, NEW pushrods and NEW timing chaing!
Let me know if your interested!
Bluews6@aol.com